/*
 * Copyright 2008-present MongoDB, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.mongodb.scala.internal

import org.mongodb.scala.{ Observable, Observer }
import reactor.core.publisher.Flux
import reactor.core.scheduler.Schedulers

import scala.concurrent.ExecutionContext

private[scala] case class ExecutionContextObservable[T](observable: Observable[T], context: ExecutionContext)
    extends Observable[T] {

  override def subscribe(observer: Observer[_ >: T]): Unit =
    Flux
      .from(observable)
      .publishOn(Schedulers.fromExecutor((command: Runnable) => context.execute(command)))
      .subscribe(observer)

}
